Air grinder



FIG. 1 is a front elevation view of the air grinder showing the new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top front perspective view thereof;

FIG. 8 is a top rear perspective view thereof;

FIG. 9 is a bottom rear perspective view thereof;

FIG. 10 is a bottom front perspective view thereof. 

The ornamental design for an air grinder, as shown. 